Trains Boats and Streams Practice Test 4 with solutions

Question : 14 of 40

Marks: +1, -0

Covering a distance of 300 km, Train A takes 2 hours more than Train B. If Train A doubles the speed, it would take 1 hour less than B. Find the speed of Train A:

25 km/hour
26 km/hour
27 km/hour
28 km/hour
None of these

Validate

Solution:

{150}/x-{150}/{2x}

= 3

{2x-x}/{2x^2}

1/{50}

2x^2

- 50x = 0

x^2

- 25x = 0
x(x - 25) = 0
⇒ x = 25 km/hour

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